Combination process for the conversion of a residual hydrocarbonaceous charge stock to produce middle distillate product

Patent · Tue Mar 21 04:00:00 EST 1989

OSTI ID:6080258

Staggs, D W; Stine, L O; Chen, T M

This patent describes a process for the conversion of a residual hydrocarbonaceous charge stock which possesses an aromatic concentration greater than about 20 volume percent to selectively produce large quantities of high quality middle distillate while minimizing hydrogen consumption which process comprises the steps of: (a) reacting at least a portion of the residual hydrocarbonaceous charge stock and a hereinafter-described paraffin-rich, distillated hydrocarbonaceous stream in a thermal coking zone at mild thermal coking conditions and a combined feed ratio from about 1 to about 2 to provide a thermal coding zone effluent rich in middle distillate; (b) separating the thermal coking zone effluent to provide a middle distillate fraction and a distillate hydrocarbonaceous stream; (c) reacting at least a portion of the distillate hydrocarbonaceous stream with hydrogen, in a catalytic hydrocracking reaction zone, (d) separating the resulting hydrocracking reaction zone effluent to provide a middle distillate product stream and a distillate paraffin-rich hydrocarbonaceous stream boiling at a temperature greater than about 700/sup 0/F (371/sup 0/C); (e) recovering the middle distillate product stream, and (f) reacting the distillate paraffin-rich hydrocarbonaceous stream boiling at a temperature greater than about 700/sup 0/F (371/sup 0/C) recovered in step (d) in the thermal coking zone of step (a).

• Assignee: UOP Inc., Des Plaines, IL
• Patent Number(s): US 4814064
• OSTI ID: 6080258
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
AROMATICS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROCRACKING
HYDROGEN
NONMETALS
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PRODUCTION
PYROLYSIS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES